The influence of irregular seafloor topography on the seismic wave field and migration imaging

HAN Fuxing; WANG Kun; SUN Jianguo

doi:10.1007/s13131-019-1407-5

Article Contents

Article Navigation > Acta Oceanologica Sinica > 2019 > 38(3): 151-158

HAN Fuxing, WANG Kun, SUN Jianguo. The influence of irregular seafloor topography on the seismic wave field and migration imaging[J]. Acta Oceanologica Sinica, 2019, 38(3): 151-158. doi: 10.1007/s13131-019-1407-5

Citation:

HAN Fuxing, WANG Kun, SUN Jianguo. The influence of irregular seafloor topography on the seismic wave field and migration imaging[J]. Acta Oceanologica Sinica, 2019, 38(3): 151-158. doi: 10.1007/s13131-019-1407-5

Citation:

PDF( 673 KB)

The influence of irregular seafloor topography on the seismic wave field and migration imaging

doi: 10.1007/s13131-019-1407-5

1.
College for Geoexploration Science Technology, Jilin University, Changchun 130026, China
2.
Jilin Communications Polytechnic, Changchun 130012, China

Received Date: 2018-05-02

Abstract

Abstract

One of the problems experienced in marine geophysical exploration is that the layered features in the migration imaging profile are blurred and the seismic energy reflected is weaker in the middle or lower parts. In this study we model the seismic wavefield records in the undulating seafloor when there is both a slight change and significant change in seafloor topography to analyze its influence on the seismic reflection data and migration imaging profiles. We compare and analyze the wave field records collected at the same point on the original and modified velocity models, and the cross-bonding resulting migration imaging profiles. The results show that whether the seismic reflection data collection is performed along the direction of the survey line or against the direction of the survey line, slight changes in the seafloor topography have little effect on the wave field records and the migration profile, while significant changes in the seafloor topography have great effect on both the wave field records and migration profile.
- seafloor topography,
- seismic wave field,
- seismic reflections,
- migration imaging

FullText(HTML)

References(13)

References

Chang Xu, Liu Yike, Du Xiangdong, et al. 2008. Seismic imaging under the irregular deep water bottom. Chinese Journal of Geophysics (in Chinese), 51(1):228-234

Chen Li, Ge Yong. 2005. The necessity of pre-stack depth migration for seismic data from rough deep sea bottom. China Offshore Oil and Gas (in Chinese), 17(1):12-15

Dan Zhiwei, Li Sanfu, Liu Jieming. 2011. Application of forward modeling technology to design of deepwater seismic acquisition. Chinese Journal of Engineering Geophysics (in Chinese), 8(2):149-154

Deng Yong, Li Lie, Chai Jitang, et al. 2010. An analysis of impacted factors on seismic data quality in the deepwater area, Qiongdongnan basin. China Offshore Oil and Gas (in Chinese), 22(6):382-386

Duan Tiejun, Zhang Kang. 2006. Direction and areas of oil and gas exploration in deep water regions in China's sea area. Petroleum & Petrochemical Today (in Chinese), 14(8):23-25

Han Fuxing, Sun Jianguo, Wang Kun. 2012. The influence of sea water velocity variation on seismic traveltimes, ray paths, and amplitude. Applied Geophysics, 9(3):335-341

Han Fuxing, Sun Jianguo, Wang Kun. 2013. Study of wave front geometric diffusion correction based on velocity variation of sea water. Geophysical Annual Conference, 8

Li Qingping. 2006. The situation and challenges for deepwater oil and gas exploration and exploitation in China. China Offshore Oil and Gas (in Chinese), 18(2):130-133

Munk W. 1974. Sound channel in an exponentially stratified ocean, with application to SOFAR. The Journal of the Acoustical Society of America, 55(2):220-226, doi: 10.1121/1.1914492

Song Yang, Song Haibin, Chen Lin, et al. 2010. Sea water thermohaline structure inversion from seismic data. Chinese Journal of Geophysics (in Chinese), 53(11):2696-2702

Tao Weixiang, Zhao Zhigang, He Shibin, et al. 2005. Petroleum geological conditions and exploration prospects in deepwater area of northwestern South China Sea. Acta Geosicientia Sinica (in Chinese), 26(4):359-364

Yang Kai, Li Lie. 2010. The effect of rough deep sea Bottom on characters of seismic wave in underlying reflectors. Chinese Journal of Engineering Geophysics (in Chinese), 7(1):1-6

Zhu Weilin, Zhang Gongcheng, Gao Le. 2008. Geological characteristics and exploration objectives of hydrocarbons in the northern continental margin basin of South China Sea. Acta Petrolei Sinica, 29(1):1-9, doi: 10.1111/j.1745-7254.2008.00742.x

Relative Articles

Supplements(0)

Cited By

Proportional views